How to save data in expressjs/session NodeJS

I have 3 files : app.js, index.js(routes), Users.js(controller)

Once my user is loggedIn (verification done between POST information and BDD) i want to save data in a session using expressjs/session.

Here is the declaration of my session in the app.js :

var session = require('express-session');

    app.use(session({
        resave: true,
        saveUninitialized: true,
        secret: 'trolololo'
    }));

Here are my routes :

router.post('/login', function(req, res, next) {
    Users.login(req, res);
});

router.get('/getSessionInfos', function(req,res,next){
    console.log(req.session);
});

And here is the controller for the login :

login : function(req, res){
        var formEmail = req.body.email;
        var formPassword = req.body.password;

        User.findOne({ where: {email: formEmail} }).then(function(user) {
            if(user){
              if (user.password == formPassword){
                  console.log('User connected');
                  req.session.email = formEmail;
                  req.session.password = formPassword;
                  console.log(req.session);
                  res.status(200).send('User Authentified');
              }else{
                  res.status(401).send('Invalid Password');
              }
          }else{
              res.status(401).send('Username');
          }
        });
    },

The Login works I get the 200 status and my console.log in the login function displays a function with my infos. But when i try fetching my session from the /getSessionInfos URL it is empty... Please send help

via Aria Groult